Control Devices EFS, EFD and EDS Series
Installation & Maintenance Information
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE
IF 899
APPLICATION
EFS and EDS Series Control Devices are used in conjunction with magnetic starters or contactors for
remote control of motors and to visually indicate that the desired function is being performed. EFD Se-
ries Manual Motor Starting Switch Enclosures are used for manually starting or stopping small AC or DC
motors. EFD Series Circuit Breakers provide overload protection to the load side conductors.
EFS/EDS (dead end) and EFSC/EDSC (through feed) Series Pushbutton Stations, Selector Switches and
Factory Sealed Pilot Lights are used separately or in combination with a variety of standard features and
special options available.
EFS Series Control Devices are suitable for use in Class I, Groups B, C, D (Division 1), Class II, Groups E,
F, G, and Class Ill hazardous (classified) locations, as defined by the National Electrical Code
®
(NEC) and
Canadian Electrical Code (CEC). EDS and EFD Series Control Devices are suitable for
Class I, Group B (Division 1) usage when they are identified by the suffix GB added to the catalog number
with seals immediately adjacent to each conduit opening.
DSD Series Control Device Covers are suitable for Class I,
Groups B (Division 2 only), C, D and Class II, Groups E, F,
G as standard.
The XT suffix provides an expanded temperature range
of -50°C to +60°C for EDS and EFS Assemblies, DSD
and DS Covers and FlexStation™ Components. For iron
assemblies, only EDS iron back boxes externally marked
with an “X” on the conduit hub can be assembled with XT
suffix iron covers. All aluminum back boxes (no marking)
may be assembled with XT suffix aluminum covers. XT
suffix covers can only be used with single gang back boxes and cannot be used with the GB suffix. The
conduit sealing requirements are displayed in Conduit Seal Requirements Chart.
INSTALLATION
1.
Select a mounting location that will provide suitable strength and rigidity for supporting all
contained wiring and control devices. Figure 2 shows the mounting dimensions of all EFS, EFD
and EDS Device Bodies. Drill and tap mounting holes for 5/16 - 18 bolts.
2.
Securely fasten the device body to the mounting surface, then attach the body into the conduit
system.
3.
Pull supply wires into the enclosure, making them just long enough to make the required
connections.
4.
Make the electrical connections utilizing the wiring scheme established for your system. See
Figures 1A and 1B for the contact diagrams of EFS and EDS Pushbutton Stations and Selector
Switches.
Figure 1A
Figure 1B
PILOT LIGHTS
Figure 1C
The field wiring terminals on the switch units used for pushbutton or selector switch stations are marked.
The and “0” indicate normally open contacts; and and “C” indicate normally closed contacts of
the switch. These switches are provided with binding screw terminals. For EDS/EDSC Series Toggle
Switches: splice factory sealed wires to supply wires using suitable connectors.
•
Strip the insulation on each conductor wire back 3/8”.
•
Use a slotted or Phillips head screwdriver to loosen the field wiring terminal screws the required
three (3) or four (4) turns.
•
Insert the bare wire conductor(s) on either side of the terminal screw(s), under the terminal wire
clamp(s) and securely tighten the screw(s).
NOTE:
Do not exceed 15 in.-lbs. of torque.
•
Pilot lights and sealing wells are furnished with pigtail leads for field connection by use of wire
nuts.
•
For EFD Manual Motor Starters, install heaters as required. Refer to manufacturer’s heater
selector listings for each motor starting switch. Mount the starter into enclosure and make
electrical connections utilizing the wiring scheme established for the motor starting switch.
5.
Test wiring for correctness with continuity checks and also for unwanted grounds with an insulation
resistance tester.
6.
Select the proper cover for assembly. Similar cover and back box materials can only be used (e.g.
iron with iron; aluminum with aluminum). Assemble cover to the device body with the cover
screws. Check the tightness of the cover screws to ensure that the cover assembly is securely
fastened.
7.
Pour Chico
®
Sealing Compound into EYS/EYD Series Sealing Fittings (where used) in accordance
with the instructions with each sealing fitting used.
NOTE:
Seals are not required for Class I, Division 2.
PILOT LAMP REPLACEMENT
110-125 Volt Circuit: 6 watt, T21/2 miniature bayonet base
LED Replacement: 24, 120 VAC, T31/4 miniature bayonet base
MAINTENANCE
1.
Frequent inspection should be made. A schedule for maintenance checks should be determined by
the environment and frequency of use. It is recommended that it should be at least once a year.
2.
Perform visual, electrical and mechanical checks on all components on a regular basis.
Visually check for undue heating evidenced by discoloration of wires or other components,
damaged or worn parts or leakage evidenced by water or corrosion in the interior.
Electrically check to make sure that all connections are clean and tight, and that contacts in the
components make or break as required.
Mechanically check that all parts are properly assembled, and that operating mechanisms move
freely.
Figure 2
!
CAUTION
Hammers or prying tools must not be allowed to damage the flat ground joint surfaces. Do not
handle covers roughly or place them on surfaces that might damage or scratch the flat ground joint
surfaces.
!
CAUTION
Hazardous location information indicating the class and group the product is approved for is marked
on the nameplate of each device. Conduit sealing fittings may be required to be installed to comply
with the requirements of the latest edition of the CEC or NEC, Section 501-5 and/or 502-5, plus any
other applicable standards. Review nameplate for specific information.
!
WARNING
Electrical power must be OFF before and during installation and maintenance.
!
WARNING
No conduit openings are to be added in the field. All unused conduit openings must be plugged
and plugs must be a minimum of 1/8 inch thick and have a minimum of five (5) threads engagement
(seven (7) threads for Group B applications). For EFS Enclosures with 1 inch hub(s), EDS 3-pole Snap
Switches and EFD/EDS with “GB” suffix, all conduits must be sealed within 18 in. of the enclosure.
!
WARNING
Check for dirt, grit or other foreign material on the mating surfaces of the cover and the device body.
Be certain that each surface is wiped completely clean before assembling. Surfaces must seat fully
against each other to provide a proper explosionproof seal.
!
WARNING
Always disconnect primary power source before opening the enclosure for inspection or service.
All statements, technical information and recommendations contained herein are based on information and tests we believe to be reliable. The accuracy or completeness thereof are not guaranteed. In accordance with
Eaton’s Crouse-Hinds Division’s “Terms and Conditions of Sale,” and since conditions of use are outside our control, the purchaser should determine the suitability of the product for his intended use and assumes
all risk and liability whatsoever in connection therewith.
Eaton’s Crouse-Hinds Division IF 899
1201 Wolf Street, Syracuse, NY 13208 • U.S.A. Revision 5
Copyright© 2016 Revised 06/16
Supercedes 06/00
Conduit Seal Requirements (Class I, Division 1)
Standard
XT Suffix
EDS
None
Within 1.5”
EDS GB Suffix
Within 1.5”
Not Allowed
EFS
Within 5 ft. on 1” conduit;
none for 1/2” or 3/4” hub size
Within 18”
